Metlab was founded in 1928 as a manufacturer of aircraft components. As part of the manufacturing process, Metlab created an in-house heat-treating facility to handle delicate, lightweight weldments. The company developed and patented the first "drop bottom" or "gantry" furnace, to allow long, slender tubes and weldments to be hung in the furnace to minimize distortion. This furnace design revolutionized the heat-treating of aluminum as well as aircraft landing gear - providing minimum distortion and rapid cooling. Expertise in deep case carburizing, coupled with large furnaces, has allowed the company to be the choice of manufacturers of large components, such as bearings and gears.